-LRB- CNN -RRB- -- Three members of a suburban Boston junior varsity boys ' soccer team were arrested Friday in connection with an alleged sexual assault at a sports camp , according to authorities .

The assaults occurred last Sunday at Camp Lenox near Otis , a town in western Massachusetts , according to the Berkshire District Attorney 's Office .

The city of Somerville , just northwest of Boston , rented the facility for team-building activities for its fall sports teams .

According to prosecutors , the three Somerville High School students allegedly entered a cabin occupied by freshman students and assaulted three victims .

The eldest of the three juniors , a 17-year-old male , faces charges that include aggravated rape of a child under 16 , indecent assault and battery on a person who has turned 14 , assault and battery and intimidation of a witness .

The two other male athletes , both 16 , face similar allegations , prosecutors said in a statement .

The allegations were reported to members of the Somerville High School athletic department on Tuesday . A criminal investigation began immediately , officials said .

In a joint statement , Somerville 's mayor and schools superintendent said , `` We are disturbed and appalled that these crimes may have taken place and our thoughts and concerns are with the victims and their families . ''

Mayor Joseph A. Curtatone and Superintendent Tony Pierantozzi said the district attorney 's office has given no indication that any other students were implicated . The alleged assaults appear to be a `` single , isolated incident . ''

Support services are available to help victims , parents and team members who attended the camp .

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Three freshmen allegedly assaulted at sports camp

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Authorities arrest three JV soccer players from suburban Boston

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They face aggravated rape and other charges